Large U.S. Utility Confirms Wartsila's Grid-balancing Advant
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This news is classified in: Traditional Energy Power Generation

Jan 12, 2023

Large U.S. Utility Confirms Wartsila's Grid-balancing Advantages With Order for Two New Power Plants

The technology group Wärtsilä will supply its internal combustion engine technology for two new U.S. power plants. The order was placed by a major American investor-owned utility in the Upper Midwest. The Wärtsilä engines were selected primarily for their grid-balancing capabilities as the utility expands its integration of renewable energy, notably wind and solar. The order was booked into Wärtsilä’s order intake in November 2022.

The two plants will operate with Wärtsilä 34DF dual-fuel engines. The first plant will generate an output of 28 MW from three engines, while the second will provide 47 MW of power from five engines. All eight engines will run on natural gas, the cleanest of all available fossil fuels, and will have the capability to use light fuel oil if natural gas is not available. This dual-fuel capability will ensure a secure supply of electricity.

The fast-starting and stopping flexibility of the Wärtsilä engines was a major consideration in the award of these contracts. Rapid grid balancing is necessary to offset the intermittency of supply as the share of renewables in the system is increased to support the utility’s decarbonisation ambitions. The operational flexibility of Wärtsilä’s technology enables full output to be reached in a matter of minutes. The engines will also provide black start capability to increase the system’s resiliency and reliability.

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“We are pleased to have been awarded these contracts. They represent an endorsement of our commitment to delivering power supply solutions that speed the journey towards a decarbonised global energy sector. The flexibility to achieve effective and efficient grid balancing is an essential element in realising the environmental benefits that renewables offer. This is the future for power generation, and it’s available today,” said Jon Rodriguez, Energy Business Director, Engine Power Plants, Wärtsilä North America.

Current Wärtsilä gas engine power plants can use up to 25 vol% hydrogen blends in natural gas. Though Wärtsilä engines can be operated on even higher hydrogen-blend levels, fuel tests are restricted to the limit of 25 vol% hydrogen for natural gas systems, according to the international equipment standard IEC/EN 60079-20-1. Wärtsilä has announced there is ongoing development at the company for pure hydrogen and other P2X carbon-free fuels.

Wärtsilä has a major presence in the U.S.A. with offices in nine strategic locations. To date the company has an installed base of 3,800 MW in the country.


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